Edwards took control of the race with 77 laps left to go when he stayed on the track during a caution period. He held the lead during the restart and was in the lead when caution lights came on with only a few laps left. When another downpour began, NASCAR had to call the race.

NASCAR officials later admitted the caution was created by malfunctioning lights, which then compromised the rest of the race.

Tony Stewart took fourth while Marcos Ambrose was fifth and pole-sitter Denny Hamlin was sixth. The top 10 was completed by Jeff Gordon, Kasey Kahne, Brian Vickers and rookie Kyle Larson.

The season-opening Daytona 500 was also delayed by rain for almost six hours on Feb. 23 before Dale Earnhardt Jr. took a victory shortly before midnight.